Results for COSC

Mido brings COSC certification to the Multifort TV Big Date with its new Multifort TV Big Date Chronometer

The Mido Multifort TV Big Date Chronometer gets a new blue checkerboard dial and COSC-certified Calibre 80 movement

Getting To The Core: The Updated Formex Essence Automatic COSC 39mm

The Formex Essence Automatic COSC 39mm is a clear example of watch evolution. It’s proof that progress is less about changing the design than refining what is already there. The 39mm case, its proportions, design, and overall presence on the wrist remain unchanged. Why change a winning “team” when the 39mm Essence is the brand’s […] Visit Getting To The Core: The Updated Formex Essence Automatic COSC 39mm to read the full article.

Introducing: The Formex Reef 39.5mm Automatic COSC 300M Forged Carbon

I am a fan of Formex. I like that the brand attempts to create the best-built watch within its chosen price category. The designs aren’t for everyone, but the build quality is undoubtedly excellent. I’ve had hands-on experience with Formex’s Field and Reef models. On both counts, they left me impressed, particularly given their asking […] Visit Introducing: The Formex Reef 39.5mm Automatic COSC 300M Forged Carbon to read the full article.

First Look - The New Formex Essence 41mm Automatic COSC in Steel

Formex extends its Essence line with a new 41mm COSC-certified model, a permanent addition that bridges the gap between the existing 39mm and 43mm editions. First presented in the Space Ghost limited edition and later added to ceramic variants, this mid-size case now arrives in stainless steel as part of the regular collection. The 41mm […]

Hands-On With The New Formex Essence Ceramica Automatic COSC 41mm

Earlier this year, Formex surprised us with the skeletonized Formex Essence Ceramica. It showcased just how far the brand could push modern materials and finishing at an accessible price point. The sleek, all-ceramic case and bracelet showcased Formex’s technical prowess, while the skeletonized dial guaranteed a big visual statement. Now Formex returns with a solid-dial […] Visit Hands-On With The New Formex Essence Ceramica Automatic COSC 41mm to read the full article.

The New Tissot Ballade Pairs COSC Accuracy with Everyday Style

Tissot revives the Ballade with COSC-certified movements, classic styling, and standout value. Available in 39mm and 30mm, this 2025 release blends precision and elegance.

Introducing - The Tissot Ballade COSC Powermatic Collection

When it comes to delivering classic-looking, good-quality watches that are usually fully equipped and nicely finished, you can always count on Tissot. Whether it’s a sporty, integrated watch, such as the PRX Automatic, a vintage-looking looker, such as the PR516, a modern all-rounder like the Gentleman or something elegantly old-school as the Heritage 1938 COSC, […]

A Hands-On Introduction To The Formex Essence Ceramica Skeleton COSC Automatic 41mm

Formex is well known for bringing the heat to much more expensive brands in terms of features and pricing. Today, as the opening salvo of the company’s 25th-anniversary celebrations, the heat gets dialed up a little more. Say “hello” to the new Formex Essence Ceramica Skeleton COSC Automatic 41mm. Yes, that’s a mouthful, but it […] Visit A Hands-On Introduction To The Formex Essence Ceramica Skeleton COSC Automatic 41mm to read the full article.

Introducing - The Accessible Tissot Heritage 1938 COSC, Now in a Fresh White-Blue Edition

Released last year, the Tissot Heritage 1938 COSC is a watch that’s hard to not objectively find brilliant. Combining a nice retro design with modern specs and a truly fair price, it even comes equipped with a chronometer-certified movement – making it one of the most accessible Swiss chronometers on the market. This handsome, affordable […]

HANDS ON: Clean and serene, the new TAG Heuer Autavia COSC GMT carries no excess baggage

It’s no secret at Time+Tide that I am a bit of a GMT fiend. There is just something about that complication that gets my horological juices flowing. Which means when a brand decides to release a GMT, I’m all over it. Will it have a classic design? How will the lume be? How will the … ContinuedThe post HANDS ON: Clean and serene, the new TAG Heuer Autavia COSC GMT carries no excess baggage appeared first on Time+Tide Watches.

First Look - The New Formex Essence 39mm Automatic COSC, Upgraded Where It Counts

Formex is giving its best-selling, compact Essence 39mm a refresh, bringing in technical and ergonomic improvements. The 39mm Essence was first showcased in 2020 as the smaller sibling to the original 43mm model, and we have since seen it in everything from the regular collection to the meteorite-dial Essence 39 Space Gold and wine-toned Gamaret. […]

Serica’s latest COSC-certified Ref. 7505 field watch proves that 35mm is the new 36mm

Serica's latest Ref. 7505 Field Chronometer proves that size does matter after all, delivering tool watch functionality in a 35mm package

Owner's Review: The Serica 5303-3 COSC Diving Chronometer Is Parisian

Picture the scene: a hectic work week ends with a quick bite at your favorite Italian trattoria, then you hustle a few blocks afterwards to a dimly lit West Village jazz club to catch a blazing first set from the house band. Glancing down at your wrist, you see you have just enough time to cab it to the airport for the redeye to Paris for a well-deserved long weekend, beachfront on the Côte d'Azur. But the watch on your wrist isn’t a vintage Rolex GMT-Master or Omega Seamaster 300, although either would be a fine choice to segue from the office to the French Riviera without missing a beat. No, your timepiece is from Serica, a microbrand based in France with enough Continental cool and midcentury charm to appear as if it just popped out of a time capsule from 1962. If ever a modern sports watch evoked the Mad Men era, this is it. Even though it’s only been in existence since 2019, Serica doesn't feel like a typical microbrand. In fact, it has the aura of an established horological icon, one with its own storied history and visual language. And if it’s not readily apparent, I’m positively obsessed with the entire Serica aesthetic.  Serica's French-designed, Swiss-made creations blend the refinement of classic Parisian fashion with the urbane cool of a European matinee idol. The company’s debut release was the W.W.W field watch, followed by the 5303 diver that made its bow in 2021, in both black and white-dialed variants. A new colorway was offered the followin...

Technical Insights: The Bvlgari Octo Finissimo Ultra COSC

First Look - The World’s Thinnest Mechanical Watch, the New 1.70mm Bulgari Octo Finissimo Ultra COSC (incl. video)

The competition for ultra-thin watches is more intense than ever. Watches with a thinness that would have been unimaginable a few years ago have recently been unveiled, with manufacturers squeezing complications into minimal space and tirelessly chasing microns. Bulgari’s Octo Finissimo saga has garnered widespread recognition in this realm. The brand’s remarkable series of records […]

Introducing - New Dial Colours for the Frederique Constant Highlife Automatic COSC 39mm

It’s pretty surprising when you think that the Highlife collection, Frederique Constant’s take on the luxury sports watch, has been around for fewer than three years. Thanks to its well-designed and finished case, its integrated and interchangeable bracelet, its clean dial, its well-represented range of complications, its affordable price tag, and the fact that it […]

Introducing: Formex Reef Radiant Bronze COSC 300M For Collective (With Live Pics)

A handsome, modern, and feature-rich limited dive watch with a striking bronze dial.

A Week On The Wrist: The Baume & Mercier Clifton Baumatic COSC

An excellent everyday watch at an everyman price.

Introducing Doxa SUB 300 Carbon COSC

SIHH 2018: The New Baume & Mercier COSC-Certified Baumatic

Baume & Merceir unveils the new Clifton Baumatic is resistant to at least 1500 Gauss, thanks to the use of the non-ferromagnetic elements.

Konstantin Chaykin ThinKing, the New World’s Thinnest Mechanical Wristwatch: Expect the Unexpected

So how thin is the ThinKing? Just 1.65 mm, beating the previous record holder, the Bulgari Octo Finissimo Ultra COSC, by just 0.05 mm.

The Three Watch Collection for $5,000: Reader Edition - Huy Tran

Editor’s note: In this 3 Watch Collection for $5,000, reader Huy Tran shares a well considered trio that touches on heritage and utility while staying entirely within the practical realm.  You can make your submission to the Three Watch Collection – Reader Edition by filling out the form right here. A 3-watch-collection is a fairly common topic of the watch community, and for good reasons. It represents a somewhat minimalist solution for those who still want to enjoy the fascination of these little machines but don’t like the idea of succumbing to consumerism craze. To be honest, I’m actually one of those people and am fancying the potential of selling all my watches to start again with an empty 3-slots watchbox. So this challenge is the perfect opportunity for me to simulate an imaginary outcome and see if I like what I come up with. My three choices reflect the spirit of minimalism that I mention, they are all time-only three-handers that offered by brands from the same watch conglomerate and one of them has just been released recently and gave me the idea. Tissot Heritage 1938 Automatic COSC (Salmon Dial) – $825 When a watch comes with the word “heritage” you know you’re dealing with some vintage inspired design. In fact, this Tissot Heritage 1938 is reminiscent of the watches they produced in the 1930’s, with a classic looking case in a compact but contemporary size of 39mm. The tasteful salmon dial is matte and occupies most of the watch face with ...

Is the COSC Excellence Chronometer Certification late to the party? Or just what the watch world needs?

Andrew O'Connor interrogates who and what COSC's stricter new chronometer certification is actually intended for.The post Is the COSC Excellence Chronometer Certification late to the party? Or just what the watch world needs? appeared first on Time+Tide Watches.

A Closer Look At COSC’s New Excellence Chronometer Certification

Contrôle Officiel Suisse des Chronomètres (COSC) is the largest Swiss independent testing facility for watch movements. Founded in 1973, this non-profit foundation aims to guarantee the precision of Swiss watches through a neutral, independent, and rigorous method. Watches with movements that passed the tests can be called “COSC-certified chronometers,” accurate to within -4/+6 seconds per […] Visit A Closer Look At COSC’s New Excellence Chronometer Certification to read the full article.

COSC Raises the Bar: A New Standard for Swiss Chronometry

COSC has announced a significant evolution in how Swiss precision will be measured. For more than fifty years, the organization has certified movements

COSC Upgrades Standards to Certify More Than Timekeeping

Interesting news just out of Contrôle Officiel Suisse des Chronomètres (COSC), the venerable Swiss chronometer testing body, which has just announced a major revamp to its testing to honour the COSC’s standard’s 50th anniversary. Excellence Chronometer, COSC’s new and improved certification program, goes beyond the ISO 3159 norm that has defined its tests for decades. Instead of just testing movements, Excellence Chronometer will require completed, cased watches to run within -2/+4 seconds a day, as well as pass wear simulation and magnetism tests. Initial thoughts While COSC remains the primary chronometer testing body in Switzerland, thanks largely to Rolex, its protocols have been due for an update for some time now. With the rise of alternative and in-house precision testing programs, the standard chronometer certification can sometimes feel left behind. Rolex’s own Superlative Chronometer certification first requires a COSC certificate, but then makes sure the watches run at -2/+2 seconds per day after further in-house testing. The METAS Chronometer program also requires the standard COSC certificate, but guarantees a regulation of 0/+5 seconds per day and a great resistance to magnetic fields. Seeing that COSC slowly updates and imposes more stringent criteria is a good sign, but it may still not be good enough. With the rise of advanced internal certification programs, it looks like some brands submit their models to COSC testing just to make sure they can...

COSC unveils stricter new “Excellence Chronometer” standard + A. Lange & Söhne opens new Chicago boutique

For the 50th anniversary of the 3159 standard, COSC has introduced a stricter new "Excellence Chronometer" tier of certification.The post COSC unveils stricter new “Excellence Chronometer” standard + A. Lange & Söhne opens new Chicago boutique appeared first on Time+Tide Watches.